<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>画盒子</title>
    <style>
        .redBox{
            width: 200px;
            height: 200px;
            background-color: red;
        }
        .orangeBox{
            width: 500px;
            height: 500px;
            background-color: orange;
        }
    </style>
</head>
<body>
    <div class="redBox">红色盒子</div>
    <div class="orangeBox">橙色盒子</div>
</body>
</html>